Bug 2183757

Description of problem:

The version of qt6-qtbase shipped with Fedora is missing zstd support. 

error: os_dlopen(/usr//lib64/obs-plugins/tuna.so->/usr//lib64/obs-plugins/tuna.so): /usr//lib64/obs-plugins/tuna.so: undefined symbol: qt_resourceFeatureZstd, version Qt_6

Support can be easily added by adding these to the rpm spec sheet:


BuildRequires: libzstd-devel

 -DQT_FEATURE_zstd=ON \

Version-Release number of selected component (if applicable):

6.4.2-5

How reproducible:

There is an obs-studio plugin called Tuna which is designed to fetch music player data. The developer only releases it in .deb package on linux, so a user in my community tried extracting the deb to OBS's plugins folder(s). When they tried to run OBS it failed to load the plugin with the following error:

error: os_dlopen(/usr//lib64/obs-plugins/tuna.so->/usr//lib64/obs-plugins/tuna.so): /usr//lib64/obs-plugins/tuna.so: undefined symbol: qt_resourceFeatureZstd, version Qt_6

Other community members also confirmed extracting the deb works in both Arch and on the OBS flatpak.

While I understand the proper method would be to recompile the plugin on Fedora, extracting a .deb package is a common user-end practice when trying to get something to work (even if it is very wrong), so it's understandable how they would hit this issue.

I see no reason why zstd support should not be added to qt6-qtbase, especially since we already also ship the required libzstd package.


Steps to Reproduce:
1. Install obs studio from rpm-fusion
2. Download the Tuna plugin .deb package:

https://obsproject.com/forum/resources/tuna.843/


3. Extract the data to /usr/lib64/obs-plugins/ and /usr/share/obs/obs-plugins/ respectively.

4. Launch OBS in a terminal and monitor the output for the failure:

error: os_dlopen(/usr//lib64/obs-plugins/tuna.so->/usr//lib64/obs-plugins/tuna.so): /usr//lib64/obs-plugins/tuna.so: undefined symbol: qt_resourceFeatureZstd, version Qt_6

Actual results:

error: os_dlopen(/usr//lib64/obs-plugins/tuna.so->/usr//lib64/obs-plugins/tuna.so): /usr//lib64/obs-plugins/tuna.so: undefined symbol: qt_resourceFeatureZstd, version Qt_6

Expected results:

info: [tuna] Loading v1.9.5-HEAD-9bfbe6a (build time 2023.03.10 23:17). Qt version: compile-time: 6.2.4, run-time: 6.4.2. libobs: compile-time: 28.0.0, run-time: 29.1.0


Additional info:

I've validated on my local build that correcting this in qt6-qtbase resolves the issue.